package com.heima.admin.service.impl;


import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.admin.mapper.AdUserMapper;
import com.heima.admin.service.AdUserService;
import com.heima.common.exception.CustException;
import com.heima.model.admin.dtos.AdUserDTO;
import com.heima.model.admin.pojos.AdUser;
import com.heima.model.admin.vos.AdUserVO;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.utils.common.AppJwtUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Service
public class AdUserServiceImpl extends ServiceImpl<AdUserMapper, AdUser> implements AdUserService {

    @Transactional
    @Override
    public ResponseResult login(AdUserDTO dto) {
        //1.校验参数 用户名 密码
        String name = dto.getName();
        String password = dto.getPassword();
        if (StringUtils.isBlank(name)||StringUtils.isBlank(password)){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID,"用户名或密码不能为空");
        }
        //2.根据用户名查询信息
        AdUser adUser = this.getOne(Wrappers.<AdUser>lambdaQuery().eq(AdUser::getName, name));
        if (adUser == null){
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"用户不存在");
        }
        //3.对比用户输入的密码 和数据库中的密码是否一致
        String inputPwd = DigestUtils.md5DigestAsHex((password + adUser.getSalt()).getBytes(StandardCharsets.UTF_8));
        if (!inputPwd.equalsIgnoreCase(adUser.getPassword())){
            CustException.cust(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR,"密码错误");
        }
        //4.检查用户状态  9
        int status = adUser.getStatus().intValue();
        if (status!=9){
            CustException.cust(AppHttpCodeEnum.LOGIN_STATUS_ERROR);
        }
        //5.修改最近的logintime
        adUser.setLoginTime(new Date());
        this.updateById(adUser);
        //6.颁发token
        String token = AppJwtUtil.getToken(Long.valueOf(adUser.getId()));
        //7.封装返回结果
        Map result = new HashMap();
        result.put("token",token);
        //因为adUser中有敏感信息，所以封装到AdUserVo中返回
        AdUserVO adUserVO = new AdUserVO();
        BeanUtils.copyProperties(adUser,adUserVO);
        result.put("user",adUserVO);
        return ResponseResult.okResult(result);
    }
}
